South America's second-longest river, the Paraná, begins in Brazil and flows south, etching out the border between Paraguay and Argentina. Before emptying into the Rio de la Plata, the river extends into a flood plain which reaches 200 miles in length and nearly 40 miles in width. The city of Tigre, with a population of 30,000, is found near the delta's end.
With its brightly painted houses and open air art, the southern immigrant neighborhood of La Boca is both enchanting and irritating. How much you enjoy yourself depends on when you go, and how allergic you are to kitsch.